Match the two columns;
Column−IColumn−II(A) C is a point on the minor arc AB of the circle with centre O.(P) 60∘ Given∠ACB=x.Calculate ∠x if ACBO is a parallelogram.(B) Chord ED is parallel to the diameter AC of the circle.(q) 120∘ Given∠CBE=55∘,calculate∠DEC.
(C) In the given figure,O is the centre of the circle.(r) 35∘ If∠ACB=60∘find ∠OAB.
(D) In the given figure,O is the centre of a circle.(s) 30∘∠AOB=400 and ∠BDC=1000. Find ∠OBC .
Choose the Correct option;